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Catalyst for preparing methylallyl alcohol through selective hydrogenation of methylacrolein and preparation method thereof

A technology for producing methallyl alcohol and methacrolein, which is applied in the preparation of hydroxyl compounds, molecular sieve catalysts, chemical instruments and methods, etc., can solve the problems of low conversion rate of raw materials and low product selectivity, and achieve high catalyst activity , good selectivity and good stability

Inactive Publication Date: 2017-06-13
SHANGHAI HUAYI GRP CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] One of the technical problems to be solved by the present invention is the low conversion rate of raw materials and low product selectivity in the prior art, and a new catalyst for the selective hydrogenation of methacrolein to methallyl alcohol is provided

Method used

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  • Catalyst for preparing methylallyl alcohol through selective hydrogenation of methylacrolein and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Weigh 20g TiO 2 Carrier, dissolved in a certain amount of copper sulfate solution containing polyethylene glycol, impregnated at room temperature for 12 hours, then stirred and dried at 80°C to obtain Cu / TiO 2 Precursor; the Cu / TiO 2 The precursor is dissolved in a certain amount of mixed solution of chloroauric acid and stannous chloride, soaked at room temperature for 12 hours, and then dried with stirring at 80°C. The obtained sample was dried at 80°C for 24h and calcined at 600°C for 4h to obtain a supported catalyst 33%Cu-0.1%Au-0.1%Sn / TiO 2 .

Embodiment 2

[0019] Weigh 20g ZrO 2 Carrier, dissolved in a certain amount of silver nitrate solution containing sodium lauryl sulfate, impregnated at room temperature for 12 hours, then stirred and dried at 80°C to obtain the precursor Ag / ZrO 2 Precursor; the Ag / ZrO 2 The precursor is dissolved in a certain amount of chloroiridic acid and lanthanum nitrate solution, soaked at room temperature for 12 hours, and then dried with stirring at 80°C. The obtained sample was dried at 150°C for 8h and calcined at 250°C for 12h to obtain a supported catalyst 0.5%Ag-5%Ir-%5La / ZrO 2 .

Embodiment 3

[0021] Weigh 20g ZnO carrier, dissolve it in a certain amount of silver nitrate solution containing polyvinylpyrrolidone, immerse it at room temperature for 12h, then stir and dry at 80°C to obtain the precursor Ag / ZnO precursor; dissolve the Ag / ZnO precursor in a certain The mixed solution of ruthenium chloride and manganese nitrate was impregnated at room temperature for 12 hours, and then dried with stirring at 80°C. The obtained sample was dried at 115° C. for 16 hours and calcined at 425° C. for 6 hours to obtain a supported catalyst 19% Ag-1% Ru-2% Mn / ZnO.

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Abstract

The invention relates to a catalyst for preparing methylallyl alcohol through selective hydrogenation of methylacrolein and a preparation method thereof, and mainly solves the problems of lower raw material conversion rate and lower product selectivity in the prior art. The catalyst for preparing the methylallyl alcohol through the selective hydrogenation of the methylacrolein comprises a first component, a second component, a third component and a carrier, wherein the first component is metal or oxide of Cu, Ag or a mixture of Cu and Ag; the second component is metal or oxide of at least one of Au, Ir, Ru and Pt; the third component is metal or oxide of at least one of La, In, Co, Sn, Fe and Mn; the carrier is at least one of MgO, TiO2, Al2O3, SiO2, activated carbon, kieselguhr, ZrO2, ZnO, an HY molecular sieve and a ZSM-5 molecular sieve. The invention adopts a technical scheme of the catalyst for preparing the methylallyl alcohol through the selective hydrogenation of the methylacrolein and the preparation method thereof so as to well solve the problems, and the catalyst and the preparation method can be applied in preparing the methylallyl alcohol through the selective hydrogenation of the methylacrolein.

Description

technical field [0001] The invention relates to a catalyst for preparing methallyl alcohol through selective hydrogenation of methacrolein and a preparation method thereof. Background technique [0002] Methallyl alcohol, commonly known as "carbon tetraol", is an important organic intermediate, widely used in the synthesis of perfumes and resins, and can also be used as a starting material to synthesize the corresponding methacrylic acid and corresponding esters. Methallyl alcohol polyoxyethylene ether (HPEG) is synthesized from methallyl alcohol and ethylene oxide, which is a new generation of high-performance concrete water reducer. The polycarboxylate high-efficiency superplasticizer synthesized by this product has high-efficiency particle dispersion and retention capabilities, and has many advantages such as high water-reducing rate, low cement usage, good reinforcement effect, good durability, no corrosion of steel bars, and environmental friendliness. , It can be used...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/89B01J23/66B01J23/68B01J29/46C07C29/141C07C33/03
CPCB01J23/8966B01J23/66B01J23/688B01J23/896B01J29/46C07C29/141C07C33/03
Inventor 芮果宁春利李永刚廖湘洲孙思杰张春雷
Owner SHANGHAI HUAYI GRP CO
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